LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

My MPG is great! Am I just lucky?

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Old 03-01-2004, 12:58 AM
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My mpg is great! Am I just lucky?

Today I drove back to school from Dallas ( ~ 235 miles) and got gas. I tallied it up and ended up getting somewhere around 27.3 MPG! This is all going mostly at 80 mph or above, and there was a little headwind. I also did around 4 or 5 4th gear passes at 90-100 mph! I LOVE my 6-spd. My only mods are: G2 CAI, LT4 KM, gutted cat, spiro-pro wires, NGK plugs, and MSD coil. On more than one occasion I have seen 29 mpg on this same drive in ultimate conditions.

Is this normal?! It seems that most people I talk to can't believe it, and I see other guys on here with not too many mods talking about how much gas mileage they've lost.

Tell me what you get with your mods.

Kyle

Oh, and by the way, this is on an engine that has 138,xxx miles on it! It's never been cracked open and doesn't drop a single bit of fluid!

Last edited by KyleBlue85Iroc-Z; 03-01-2004 at 01:03 AM.
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Old 03-01-2004, 01:13 AM
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Doesn't sound far fetched at all. They can get good gas mileage, provided you do your job of keeping your right foot out of it Plus that 6th gear is nice on the 3.42 ratio for crusing. I just got 4.10s put in, not sure how 6th will be now. Haven't tightened everything down on the rearend or bled the brakes. But eventually when the car comes out I will see how 6th is now. I really don't care what kind of mileage I get anyway. So, I am not in 6th too often saving gas anyway But it is nice to know it is there if needed...
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Old 03-01-2004, 10:49 AM
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Sounds right. My record is 31.3 mpg, and I have many 28 mpg trips.

The 6 speed helps a lot. My car was stock when I got those numbers.

By the way, the average mpg for the life of my car with 64,000 miles is 21.5 mpg. I've kept track of milage every fill up, and after 64,000 miles I think it's pretty good to average 21.5 mpg over the life of the car so far. I don't baby it in town either, but it's a split of 50/50 city/highway miles.

Dan
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Old 03-01-2004, 11:06 AM
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i get rediculous milage when i drive down to MD. i put the cruise on at about 63 mph. i think it comes out to 28-29mpg. unless i did the math wrong. i can get to MD from boston on one tank of gas.
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Old 03-01-2004, 11:12 AM
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I just put about 16 gallons in my tank and i got about 170 or so miles out of it. But then othertimes I get well above 250. Mine's an a4 though.
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Old 03-01-2004, 11:47 AM
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i've done a trip with ZERO traffic and setting the cruise at 55 and knocked down just over 30mpg

doing 75ish and some nasty traffic onthe highway i've gotten 26-27mpg

factory rated isn't the lt1 28mpg?
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Old 03-01-2004, 11:56 AM
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You M6 guys suck. I filled up today and got 219 miles to a tank. Thats with 50/50 highway and town milage. It came out to around 15mpgs. Thats with 3200 stall, gears, Nittos @ 22psi and free mods and 150k on the clock. My 02's are pretty dirty so I'm hopin' the MPG's will clime a bit once I replace them.

Driving 5 or so hours at 70 mph, I got around 400-425 miles a tank driving to the coast.
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Old 03-01-2004, 12:07 PM
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Originally posted by 95 Mystic TA
You M6 guys suck. I filled up today and got 219 miles to a tank. Thats with 50/50 highway and town milage. It came out to around 15mpgs. Thats with 3200 stall, gears, Nittos @ 22psi and free mods and 150k on the clock. My 02's are pretty dirty so I'm hopin' the MPG's will clime a bit once I replace them.

Driving 5 or so hours at 70 mph, I got around 400-425 miles a tank driving to the coast.
I'm sure that stall and gears aren't helping out your mileage at all.
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Old 03-01-2004, 12:07 PM
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Man my best is like 19 or 20 with my mods....4.10's and my right foot own me.... Im usually like 16 in town...
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Old 03-01-2004, 12:21 PM
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u all are luck people.. My lightning gest 11 mpg on the highway and 9ish with city driving. My camaro i will get about 10-14 mpg no matter what i do.. but i have a 3 speed in that.. i miss have a car that gets good gas mileage.
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Old 03-01-2004, 01:57 PM
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My mother in law had a 95 m6 z28, drove about an hr to raleigh everyday and back down I-40, she was getting around 31 mpg bone stock, better than the pos v6 malibu she replaced it with.

I'm getting 13.5 mpg in town/country, 18-19 on the highway in my truck. stall converter... wish I had a t-56, I love em.

change your o2s, it's past time.
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Old 03-01-2004, 04:04 PM
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29.6 is my record and thats with my 4.10's
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Old 03-01-2004, 04:31 PM
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13mpg in town, 16 highway. But, ive got one clogged cat definetely, and the other one possibly, so that is definetely killing me. Plus, im an A4.
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Old 03-01-2004, 04:35 PM
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My best so far has been 28 mpg thats with a little racing around and freeway driving. In my dads car he has gotten 27.5 as a best with 4.10's
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Old 03-01-2004, 05:04 PM
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man i think i need a tune up...my stock car with an m6 got about 25 on my last highway trip recently
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